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Editorial Team
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Asked: 2026-05-25T18:05:33+00:00

I am using the AVCaptureFrames example for monotouch from the example shown here: https://github.com/xamarin/monotouch-samples/tree/master/AVCaptureFrames

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I am using the AVCaptureFrames example for monotouch from the example shown here: https://github.com/xamarin/monotouch-samples/tree/master/AVCaptureFrames the problem I have is that each frame that is captured and redisplayed in a UIImageView that is orientated with the home button on the bottom the image seems to be rotated 90 degrees Example of portrait view; however if I rotate the device so that the home button is on the right, the image is displayed as expected Example of a landscape view. Also if I turn the app landscape the other way the image is upside down.

Any advice how to rotate the image captured from AVFoundation to orient the same way the device is being held?

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1 Answer

  1. Editorial Team

    did you setup the correct preview layer orientation? Follows a sample from my own app, change to your settings.

        previewLayer = AVCaptureVideoPreviewLayer.FromSession(captureSession);
    previewLayer.Orientation = AVCaptureVideoOrientation.LandscapeLeft;
    previewLayer.VideoGravity = "AVLayerVideoGravityResizeAspectFill";
    previewLayer.Frame = new RectangleF(0, 0, 1024, 768);
    this.View.Layer.AddSublayer(previewLayer);

    Does this helps?
    BR

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